Just take a deep breath, relax. They will tell you what you are going to need to know while in class. My suggestion is, once you get your book of rules, write out all the rules, signals, and definitions on flash cards, made out of index cards. write the rule, definition or signal on the front and the ans on the back, and flip through them until you know them all.
Example, Front of index card.. TRAIN Back of index card, An Engine or more then one engine, coupled with or without cars, displaying Markers.
These days you can go to a staples or fed ex and copy the info, then cut and paste them on index cards.
Always seemed to me the best was to do it, maybe someone has a better way.
Marty, It runs on steam!